Global Patent Index - EP 2725856 A1

EP 2725856 A1 20140430 - WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION SYSTEM AND MOBILE STATIONS

Title (en)

WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION SYSTEM AND MOBILE STATIONS

Title (de)

DRAHTLOSES KOMMUNIKATIONSVERFAHREN, DRAHTLOSES KOMMUNIKATIONSSYSTEM UND MOBILSTATIONEN

Title (fr)

PROCÉDÉ DE COMMUNICATION SANS FIL, SYSTÈME DE COMMUNICATION SANS FIL ET STATIONS MOBILES

Publication

EP 2725856 A1 20140430 (EN)

Application

EP 12804404 A 20120626

Priority

  • JP 2011141925 A 20110627
  • JP 2011249899 A 20111115
  • JP 2012066241 W 20120626

Abstract (en)

Provided are a radio communication method, a radio communication system, and a mobile station, by which it is possible to easily establish initial access between mobile stations in D2D communication. A mobile station 200A transmits a synchronization-use signal to be used for establishment of initial access with a mobile station 200B toward the mobile station 200B on the basis of control information received from a cell to which the mobile station 200A is connected. The mobile station 200B receives the synchronization-use signal on the basis of the control information received from the cell. Moreover, the mobile station 200B determines transmission power and a transmission timing of a response signal on the basis of the received synchronization-use signal, and transmits the response signal toward the mobile station 200A. The mobile station 200A and the mobile station 200B start D2D communication on the basis of the synchronization-use signal and the response signal.

IPC 8 full level

H04W 92/18 (2009.01); H04W 56/00 (2009.01)

CPC (source: EP US)

H04W 56/001 (2013.01 - US); H04W 56/002 (2013.01 - EP US); H04W 72/02 (2013.01 - US); H04W 76/14 (2018.02 - EP US); H04W 8/005 (2013.01 - EP US)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2725856 A1 20140430; EP 2725856 A4 20151118; EP 3720243 A1 20201007; JP 2013034165 A 20130214; US 2014120934 A1 20140501; US 9743438 B2 20170822; WO 2013002206 A1 20130103

DOCDB simple family (application)

EP 12804404 A 20120626; EP 20170830 A 20120626; JP 2011249899 A 20111115; JP 2012066241 W 20120626; US 201214116042 A 20120626